| 摘要 |
PROBLEM TO BE SOLVED: To always and stably enable to record/reproduce using a time stamp. SOLUTION: A clock generation circuit 4 generates a synchronizing signal of a time reference that a system clock at an encoding time coincides with a frequency based on an input PCR(program time criterion reference value), and generates a lock flag showing its synchronizing state. A switch circuit 3 is switched by the lock flag, and supplies the input packet data to a recording time stamp addition circuit 8 only when a PLL in the clock generation circuit 4 is synchronized with the PCR of the input packet data, and interrupts the input to the recording time stamp addition circuit 8 to scrap the packet data when the PLL isn't synchronized with the PCR. |
